CN110672317A - Pneumatic element detection system of transmission - Google Patents
Pneumatic element detection system of transmission Download PDFInfo
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- CN110672317A CN110672317A CN201910890304.2A CN201910890304A CN110672317A CN 110672317 A CN110672317 A CN 110672317A CN 201910890304 A CN201910890304 A CN 201910890304A CN 110672317 A CN110672317 A CN 110672317A
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Abstract
The invention belongs to a transmission fault detection system, and aims to solve the technical problems that the fault of a pneumatic element of a transmission of a real vehicle in the prior art is difficult to simulate through a test working condition and cannot realize synchronous acquisition of command signals and execution signals, and provides a transmission pneumatic element detection system for detecting the gas circuit faults of a single H gas valve and a double H gas valve, which comprises an upper computer, an alternating current power supply, a switching power supply, a pressure sensor, a data acquisition card, a multi-path solid-state relay, a relay and first electromagnetic valves with the same number as the relays, and a displacement sensor for the double H gas valve, wherein the displacement sensor is formed by the upper computer, the data acquisition card and the multi-path solid-state relay, an acquisition control unit is used for controlling the on-off of the relay so as to control the opening and closing of the electromagnetic valves, the pressure sensor and the displacement sensor are, and judging whether a fault occurs and the fault position by comparing the difference of the electric signals.
Description
Technical Field
The invention belongs to a transmission fault detection system, and particularly relates to a transmission pneumatic element detection system.
Background
At the present stage, the fault detection of the pneumatic element of the mechanical gearbox is still in an exploration stage, and no mature test system exists, so that the response time detection and the clamping stagnation phenomenon detection of the pneumatic element and the influence judgment on the shifting of the synchronizer lack test data support. The fault detection of the single H gas valve and the double H gas valves is lack of exploration, wherein the structure and the working principle of the single H gas valve are disclosed in Chinese patents with application numbers of CN201611097730.3 and CN 201620231177.7; the chinese patent with application number CN201320807697.4 discloses the structure and working principle of the double H-valve, which mainly causes the following three main problems: (1) the working condition of the real vehicle is difficult to simulate, and the working condition of the real vehicle cannot be converted into a controllable and collectable test working condition before the transmission is installed on the real vehicle; (2) even if a displacement or air pressure sensor is arranged at a relevant part, signals cannot be converted into easily interactive electric signals; (3) synchronous acquisition of command signals and execution of signals cannot be achieved.
Disclosure of Invention
The invention mainly aims to solve the technical problems that faults of pneumatic elements of a transmission of a real vehicle in the prior art are difficult to simulate through test working conditions, and synchronous acquisition of command signals and execution signals cannot be realized, and provides a pneumatic element detection system of the transmission.
In order to achieve the purpose, the invention provides the following technical scheme:
a pneumatic element detection system of a transmission is used for detecting a single H gas valve and is characterized by comprising an upper computer, an alternating current power supply, a first switching power supply, a second switching power supply, a plurality of air pressure sensors, a data acquisition card, a plurality of paths of solid-state relays, at least one relay and first electromagnetic valves, wherein the number of the first electromagnetic valves is the same as that of the relays; the input ends of the first switching power supply and the second switching power supply are connected with an alternating current power supply; one end of each first electromagnetic valve is connected with the N end of the alternating current power supply, and the other end of each first electromagnetic valve is connected with the L end of the alternating current power supply through the working circuit of the corresponding relay; the first switch power supply supplies power to a plurality of air pressure sensors which are connected in parallel, and the output end of each air pressure sensor is connected with a plurality of data input ends corresponding to the data acquisition card; the data acquisition card interacts with an upper computer through a PCI bus; the signal output end of the data acquisition card is connected with the corresponding control end of the multi-path solid-state relay; the working voltage of the multi-path solid-state relay is provided by a data acquisition card; the working ends of the multi-path solid-state relay form a control loop with the control circuit of the corresponding relay through the output end of the second switching power supply respectively; the plurality of air pressure sensors are respectively installed on: the air passage between the single H air valve and the first electromagnetic valve for driving the single H air valve, the air passage between the first air outlet of the single H air valve and the high-grade side of the first high-low grade cylinder, and the air passage between the second air outlet of the single H air valve and the low-grade side of the first high-low grade cylinder.
Furthermore, an air switch is arranged on an alternating current loop formed by the alternating current power supply, the first switching power supply, the second switching power supply and the relay.
Furthermore, the baroceptor is a current type baroceptor, the output end of the current type baroceptor is connected in series with a resistor, the other end of the resistor is grounded, and the data input end of the data acquisition card is connected in parallel with the two ends of the resistor.
Further, the resistance is a precision resistance of 50 Ω.
Further, the model of the data acquisition card is NI6143, and the model of the multi-path solid-state relay is GTGM 04.
A pneumatic element detection system of a transmission is used for detecting double H gas valves and is characterized by comprising an upper computer, an alternating current power supply, a first switching power supply, a second switching power supply, a plurality of air pressure sensors, a displacement sensor, a data acquisition card, a plurality of paths of solid-state relays, at least one relay and second electromagnetic valves, wherein the number of the second electromagnetic valves is the same as that of the relays; the input ends of the first switching power supply and the second switching power supply are connected with an alternating current power supply; one end of each second electromagnetic valve is connected with the N end of the alternating current power supply, and the other end of each second electromagnetic valve is connected with the L end of the alternating current power supply through the working circuit of the corresponding relay; the first switch power supply supplies power to a plurality of air pressure sensors which are connected in parallel, and the output end of each air pressure sensor is connected with a plurality of data input ends corresponding to the data acquisition card; the data acquisition card interacts with an upper computer through a PCI bus; the signal output end of the data acquisition card is connected with the corresponding control end of the multi-path solid-state relay; the displacement sensor is connected with a corresponding data input end of the data acquisition card; the working voltage of the multi-path solid-state relay is provided by a data acquisition card; the working ends of the multi-path solid-state relay form a control loop with the control circuit of the corresponding relay through the output end of the second switching power supply respectively; the air pressure sensors are respectively arranged on an air path between a first air outlet of the double H air valve and the high-grade side of the second high-low grade cylinder and an air path between a second air outlet of the double H air valve and the low-grade side of the second high-low grade cylinder; and the displacement sensor is arranged on a piston rod of a driving cylinder for driving the double H-shaped air valves.
Furthermore, the displacement sensor is a stay wire displacement sensor and is arranged at the end part of a piston rod of a driving cylinder for driving the double H-shaped air valve.
Furthermore, an air switch is arranged on an alternating current loop formed by the alternating current power supply, the first switching power supply, the second switching power supply and the relay.
Furthermore, the baroceptor is a current type baroceptor, the output end of the current type baroceptor is connected in series with a resistor, the other end of the resistor is grounded, and the data input end of the data acquisition card is connected in parallel with the two ends of the resistor.
Further, the model of the data acquisition card is NI6143, and the model of the multi-path solid-state relay is GTGM 04.
Compared with the prior art, the invention has the beneficial effects that:
1. the transmission pneumatic element detection system disclosed by the invention has the advantages that the on-off of the relay is controlled by sending instructions to the multi-path solid-state relay through the upper computer and the data acquisition card, so that the control on the first electromagnetic valve is realized, the detection data of the plurality of air pressure sensors are acquired through the data acquisition card, the detection data received by the data acquisition card are visually obtained through the upper computer, the first electromagnetic valve and the air pressure sensors are respectively arranged at corresponding positions of the single H-shaped air valve, the air pressure sensors are respectively used for detecting air pressure values at each installation position, the change condition of the air pressure values acquired by the data acquisition card can be observed through the upper computer, and whether the transmission pneumatic element has a fault. The system converts the working condition of the real vehicle into a controllable and collectable test working condition, converts the air pressure into an electric signal through the sensor, can synchronously collect command signals and execution units, can objectively and effectively evaluate the working performance of the pneumatic element, and has the characteristics of simple structure, convenient test operation, high test efficiency, low cost and the like.
2. The air switch is used for protecting a control system and preventing components from being damaged when short circuit or overload occurs.
3. The invention can adopt a current type air pressure sensor, and the current change is converted into the voltage change through the series resistor, thereby being collected by the data acquisition card.
4. The transmission pneumatic element detection system disclosed by the invention has the advantages that the on-off of the relay is controlled by sending instructions to the multi-path solid-state relay through the upper computer and the data acquisition card, so that the control on the second electromagnetic valve is realized, the detection data of the plurality of air pressure sensors and the displacement sensors are acquired through the data acquisition card, the detection data received by the data acquisition card is visually acquired through the upper computer, the second electromagnetic valve, the air pressure sensors and the displacement sensors are respectively arranged at corresponding positions of the double H air valves, the air pressure sensors respectively detect the air pressure values at all the installation positions, the displacement sensors detect the displacement at the piston rod of the driving cylinder, the air pressure values and the displacement variation conditions acquired by the data acquisition card can be observed through the upper computer, and whether the transmission pneumatic element has. The system converts the working condition of the real vehicle into a controllable and collectable test working condition, converts the air pressure and the displacement into electric signals through the sensor, can synchronously collect command signals and execution units, can objectively and effectively evaluate the working performance of the pneumatic element, and has the characteristics of simple structure, convenient test operation, high test efficiency, low cost and the like.
5. The displacement sensor adopts the stay wire displacement sensor, and is convenient to disassemble and assemble when the gas circuit of the double H gas valve is detected.
Drawings
FIG. 1 is a schematic structural connection diagram according to a first embodiment of the present invention;
FIG. 2 is a schematic structural connection diagram according to a second embodiment of the present invention;
FIG. 3 is a schematic circuit diagram according to a first embodiment of the present invention (the same applies to the second embodiment);
FIG. 4 is a schematic diagram of an output result of the air pressure sensor according to the first embodiment of the present invention;
fig. 5 is a schematic diagram of output results of the air pressure sensor and the displacement sensor according to the second embodiment of the invention.
The device comprises a 1-single H air valve, a 2-piston rod, a 3-first air outlet of the single H air valve, a 4-second air outlet of the single H air valve, a 5-first high-low gear air cylinder, a 6-double H air valve, a 7-first air outlet of the double H air valve, a 8-second air outlet of the double H air valve, a 9-second high-low gear air cylinder, a 10-driving air cylinder and an 11-acquisition control unit.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments do not limit the present invention.
The pneumatic element detection system of the transmission mainly solves the problem of failure detection of pneumatic elements of a single H air valve and a double H air valve, can perform test simulation on a real-vehicle transmission, synchronously acquires commands and execution signals, and is convenient for accurately judging whether a failure occurs and the position of the failure.
Example one
Referring to fig. 1 and 3, the pneumatic element for detecting a single H gas valve 1 includes an upper computer, an ac power supply, a first switching power supply, a second switching power supply, a plurality of pressure sensors, a data acquisition card, a plurality of solid-state relays, at least one relay, and first electromagnetic valves having the same number as the relays; an air pressure sensor S1 is arranged between a first electromagnetic valve DCF1 and a single H air valve 1, an air pressure sensor S3 is arranged on an air path between a first air outlet 3 of the single H air valve and the high-grade side of a first high-low grade cylinder 5, and an air pressure sensor S2 is arranged on an air path between a second air outlet 4 of the single H air valve and the low-grade side of the first high-low grade cylinder 5; the input ends of the first switching power supply and the second switching power supply are connected with an alternating current power supply; one end of each first electromagnetic valve is connected with the N end of the alternating current power supply, and the other end of each first electromagnetic valve is connected with the L end of the alternating current power supply through the working circuit of the corresponding relay; the first switch power supply supplies power to a plurality of air pressure sensors which are connected in parallel, and the output end of each air pressure sensor is connected with a plurality of data input ends corresponding to the data acquisition card; the data acquisition card interacts with an upper computer through a PCI bus; the signal output end of the data acquisition card is connected with the corresponding control end of the multi-path solid-state relay; the working voltage of the multi-path solid-state relay is provided by a data acquisition card; the working ends of the multi-path solid-state relays respectively form a control loop through the output end of the second switching power supply and a control circuit of the corresponding relay, and an acquisition control unit 11 consisting of a data acquisition card, the multi-path solid-state relays and an upper mechanism is used for controlling the whole detection system. In this embodiment, the data acquisition card adopts a multifunctional data acquisition card with model number NI6143, the model number of the multi-path solid-state relay is GTGM04, the upper computer is a porphyry PPC-3190 industrial tablet computer, the upper computer sends an instruction to the data acquisition card, the data acquisition card sends an instruction to the multi-path solid-state relay, corresponding pins of the multi-path solid-state relay are powered on, the relay JJ1 is communicated through a second switching power supply SMPS2, a first electromagnetic valve DCF1 works to drive a single H gas valve 1 to act, the single H gas valve 1 acts to cause the gas of a normally ventilated P port to switch back and forth between a first gas outlet 3 of the single H gas valve and a second gas outlet 4 of the single H gas valve, so as to drive a first high-low gear cylinder to act to complete the high-low gear switching of the mechanical transmission, and the gas pressure sensor S1, the gas pressure sensor S2 and the gas pressure sensor S3 respectively transmit the acquired gas pressure conditions, corresponding collected data as shown in fig. 4 can be obtained on the upper computer through the PCI slot, the data are compared by taking the air pressure sensor S1 as a standard, and if the conversion conditions of the air pressure sensor S2 and the air pressure sensor S3 do not correspond to the air pressure sensor S1, it is indicated that the corresponding installation positions of the air pressure sensor S2 and the air pressure sensor S3 are faulty: at t0, PO.1 of an NI6143 board card outputs 0, X2 of GTGM04 is not electrified, NO2 and CM2 are disconnected, a coil of a relay JJ1 is not electrified, normally open contacts 1 and 5 of a relay JJ1 are disconnected, a first electromagnetic valve DCF1 is not electrified, a first electromagnetic valve DCF1 is disconnected, a C port of a single H air valve is not electrified, a first air outlet 3 of the single H air valve is electrified, a second air outlet 4 of the single H air valve is exhausted, a piston of a first high-low gear cylinder 5 is driven to move leftwards, at the moment, an air pressure sensor S1 outputs a voltage value U01, an air pressure sensor S2 outputs a voltage value U02, and an air pressure sensor S3 outputs a voltage value U03; at time t1, PO.1 of an NI6143 board card outputs 1, X2 of GTGM04 is electrified, NO2 and CM2 are switched on, a coil of a relay JJ1 is electrified, normally open contacts 1 and 5 of a relay JJ1 are switched on, a first electromagnetic valve DCF1 is electrified, a first electromagnetic valve DCF1 is switched on, a C port of a single H air valve is ventilated, a second air outlet 4 of the single H air valve is ventilated, a first air outlet 3 of the single H air valve exhausts air to drive a piston of a first high-low gear cylinder 5 to move rightwards, at the moment, an air pressure sensor S1 outputs a voltage value U11, an air pressure sensor S2 outputs a voltage value U12, and an air pressure sensor S3 outputs a voltage value U13; the working processes of the t0 and the t1 are repeated at the t2 and the t 3. The upper computer software converts the voltage signal collected by the NI6143 board card into a corresponding air pressure signal, the response time of the single H valve can be calculated by comparing and analyzing an air pressure signal curve, the curve of the theoretical air pressure signal S3 should change along with the air pressure signal S1, and the curve change of the air pressure signal S2 should be opposite to the air pressure signal S1. Otherwise, the corresponding position is indicated to be in fault.
Example two
Referring to fig. 2 and 3, the pneumatic components for detecting the double H-gas valve 6 include an upper computer, an ac power supply, a first switching power supply, a second switching power supply, a plurality of pressure sensors, a displacement sensor, a data acquisition card, a plurality of solid-state relays, at least one relay, and second electromagnetic valves, the number of which is the same as that of the relays; the input ends of the first switching power supply and the second switching power supply are connected with an alternating current power supply; the air pressure sensor S4 is arranged on an air path between the first air outlet 7 of the double H air valve 6 and the high-grade side of the second high-low grade air cylinder 9, and the air pressure sensor S5 is arranged on an air path between the second air outlet 8 of the double H air valve 6 and the low-grade side of the second high-low grade air cylinder 9; the displacement sensor LS is mounted on the piston rod 2 of the drive cylinder 10 which drives the double H-valve 6. The input ends of the first switching power supply and the second switching power supply are connected with an alternating current power supply; one end of each second electromagnetic valve is connected with the N end of the alternating current power supply, and the other end of each second electromagnetic valve is connected with the L end of the alternating current power supply through the working circuit of the corresponding relay; the first switch power supply supplies power to a plurality of air pressure sensors which are connected in parallel, and the output end of each air pressure sensor is connected with a plurality of data input ends corresponding to the data acquisition card; the data acquisition card interacts with an upper computer through a PCI bus; the signal output end of the data acquisition card is connected with the corresponding control end of the multi-path solid-state relay; the displacement sensor is connected with a corresponding data input end of the data acquisition card; the working voltage of the multi-path solid-state relay is provided by a data acquisition card; the working ends of the multi-path solid-state relays respectively form a control loop through the output end of the second switching power supply and a control circuit of the corresponding relay, and an acquisition control unit 11 consisting of a data acquisition card, the multi-path solid-state relays and an upper mechanism is used for controlling the whole detection system. In this embodiment, the data acquisition card is a multifunctional data acquisition card with model number of NI6143, the multi-channel solid state relay is with model number of GTGM04, the upper computer is a Mohua PPC-3190 industrial tablet computer, the upper computer sends instructions to the data acquisition card, the data acquisition card sends instructions to the multi-channel solid state relay, corresponding pins of the multi-channel solid state relay are electrified, the relay JJ2 is communicated through the second switch power supply SMPS2, the second electromagnetic valve DCF2 is opened to work, the driving cylinder 10 is driven to act, the piston rod 2 of the driving cylinder 10 acts, the displacement sensor LS is driven to act simultaneously, meanwhile, the double H air valves 6 are driven to act through ejector rods, and the action of the ejector rods of the double H air valves causes the opening Q of the normal-ventilation air to switch back and forth between the first air outlets 7 of the double H air valves and the second air outlets of the double H air valves, so that the second high-low gear cylinder 9 is driven to act, and the high-low gear switching of the mechanical transmission is completed. The air pressure sensor S4, the air pressure sensor S5 and the displacement sensor LS respectively transmit the acquired air pressure condition and the acquired displacement condition to the data acquisition card through corresponding pins of the data acquisition card in an electric signal mode, corresponding acquired data shown in the figure 5 can be obtained on an upper computer through a PCI slot, the displacement sensor LS is used as a standard for comparison, and if the conversion conditions of the air pressure sensor S4 and the air pressure sensor S5 do not correspond to the displacement sensor LS, the corresponding installation positions of the air pressure sensor S4 and the air pressure sensor S5 are faulty: at the time of t0, the PO.O output of the NI6143 board is 0, the X1 of GTGM04 is not electrified, NO1 and CM1 are disconnected, the coil of the relay JJ2 is not electrified, the normally open contacts 1 and 5 of the relay JJ2 are disconnected, the second electromagnetic valve DCF2 is not electrified, the port A of the second electromagnetic valve DCF2 is ventilated, the port B is exhausted, the piston rod 2 of the cylinder 10 is driven to move downwards, the displacement sensor LS is driven to move, meanwhile, the mandril of the double H air valve 6 is driven to compress rightwards, the second air outlet 8 of the double H air valve is ventilated, the first air outlet 7 of the double H air valve is exhausted, the piston of the second high-low gear cylinder 9 is driven to move rightwards, at the moment, the displacement sensor LS outputs a voltage value U00, the air pressure sensor S4 outputs a voltage value U04, and the air pressure sensor; at the time of t1, the PO.O output of the NI6143 board is 1, the X1 of the GTGM04 is electrified, the NO1 and the CM1 are switched on, the coil of the relay JJ2 is electrified, the normally open contacts 1 and 5 of the relay JJ2 are switched on, the second electromagnetic valve DCF2 is electrified, the port B of the second electromagnetic valve DCF2 is ventilated, the port A is exhausted, the piston rod 2 of the cylinder 10 is driven to move upwards, the displacement sensor is driven to move upwards, meanwhile, the ejector rods of the double H air valves 6 are driven to extend leftwards, the first air outlets 7 of the double H air valves are ventilated, the second air outlets 8 of the double H air valves are exhausted, the piston of the high-low gear cylinder 10 is driven to move leftwards, at the moment, the displacement sensor LS outputs a voltage value U10, the air pressure sensor S4 outputs a voltage value U14; the working processes of the t0 and the t1 are repeated at the t2 and the t 3. The upper computer software converts the voltage signals acquired by the NI6143 board card into corresponding displacement signals and air pressure signals, the response time of the double H air valves 6 can be calculated by comparing and analyzing displacement signal curves and air pressure signal curves, the curves of the air pressure signals S5 should change along with the displacement LS under the theoretical condition, the curve change of the air pressure signals S4 should be opposite to the displacement curves, and otherwise, the corresponding installation positions of the air pressure sensor S4 and the air pressure sensor S5 are indicated to be faulty. The displacement sensor can be a stay wire displacement sensor which is arranged at the end part of a piston rod 11 of a driving cylinder 10 for driving the double H-shaped air valve 6, and is convenient to mount and dismount during test mounting based on the working principle of the stay wire displacement sensor.
The second embodiment is simply modified, and can also be used for switching detection of the single H gas valve 1 and the double H gas valve 6, when the single H gas valve 1 needs to be detected, the second electromagnetic valve DCF2 is controlled to be closed on a gas path between the single H gas valve 1 and the first electromagnetic valve for driving the single H gas valve 1, and data of the displacement sensor LS is not acquired; and the first electromagnetic valve DCF1 and the second electromagnetic valve DCF2 can be simultaneously controlled to work, and the detection of the single H air valve 1 and the double H air valve 6 can be simultaneously completed.
The circuit connection diagram shown in fig. 3 of the present invention is that the installation positions of the first solenoid valve DCF1, the second solenoid valve DCF2, the displacement sensor LS and each air pressure sensor are not limited, and the present invention can be properly installed at any detection position for detection of air passage faults not limited to the transmission.
In the first and second embodiments, the air pressure sensor may be a voltage-type air pressure sensor, and is directly connected to the corresponding pin of the data acquisition card; the pressure sensor can adopt a Weika high-precision pressure sensor for collecting the air pressure at a corresponding position, converting the air pressure value into a 4-20mA current signal and converting the 4-20mA current signal of the sensor into a 0.2-1V voltage signal through a 50-ohm precision resistor. In addition, an air switch is arranged on an alternating current loop formed by the alternating current power supply, the first switching power supply, the second switching power supply and the relay, so that damage to components and parts caused by short circuit or overload is prevented.
The upper computer mainly provides an operating environment for upper software; the data acquisition card is used for acquiring data of each sensor and executing an instruction sent by the upper computer; the first switch power supply SMPS1 can adopt a bright weft 60W power supply to provide DC24V voltage for the acquisition loop; the multi-path solid-state relay plays a role of an intermediate relay, and the on-off of coils of the relays JJ1 and JJ2 is controlled by using a 3V voltage signal sent by a DO channel of the NI6143 board card; the relay JJ1 and the relay JJ2 play a role in controlling direct current and alternating current and control the on-off of the first electromagnetic valve DCF1 and the second electromagnetic valve DCF 2; and the first electromagnetic valve DCF1 and the second electromagnetic valve DCF2 execute control instructions to complete the on-off of the air path.
The data acquisition card adopts a multifunctional data acquisition board card with the model number of NI6143, combines the latest low-price PC technology, can provide synchronous sampling for a data acquisition and control system with high channel number, and can obtain the strongest equipment processing capacity and higher multi-channel precision by a special analog-to-digital converter (ADC) of each channel. With a sampling rate of 250kS/s per channel, 2 24-bit counters/timers and 8 digital I/O lines.
The invention converts the working condition of the real vehicle into the controllable and collectable test working condition, converts the displacement and the air pressure into electric signals through the sensor, and synchronously collects command signals and execution signals. The test operation is convenient, the efficiency is high and the cost is low.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A transmission pneumatic element detection system for detecting a single H-valve, characterized by: the system comprises an upper computer, an alternating current power supply, a first switching power supply, a second switching power supply, a plurality of air pressure sensors, a data acquisition card, a plurality of paths of solid-state relays, at least one relay and first electromagnetic valves of which the number is the same as that of the relays;
the input ends of the first switching power supply and the second switching power supply are connected with an alternating current power supply;
one end of each first electromagnetic valve is connected with the N end of the alternating current power supply, and the other end of each first electromagnetic valve is connected with the L end of the alternating current power supply through the working circuit of the corresponding relay;
the first switch power supply supplies power to a plurality of air pressure sensors which are connected in parallel, and the output end of each air pressure sensor is connected with a plurality of data input ends corresponding to the data acquisition card;
the data acquisition card interacts with an upper computer through a PCI bus; the signal output end of the data acquisition card is connected with the corresponding control end of the multi-path solid-state relay;
the working voltage of the multi-path solid-state relay is provided by a data acquisition card; the working ends of the multi-path solid-state relay form a control loop with the control circuit of the corresponding relay through the output end of the second switching power supply respectively;
the plurality of air pressure sensors are respectively installed on: the air channel between the single H air valve (1) and a first electromagnetic valve for driving the single H air valve (1), the air channel between a first air outlet (3) of the single H air valve (1) and the high-grade side of the first high-low grade cylinder (5), and the air channel between a second air outlet (4) of the single H air valve (1) and the low-grade side of the first high-low grade cylinder (5).
2. A transmission pneumatic element detection system as recited in claim 1, wherein: and an air switch is arranged on an alternating current loop formed by the alternating current power supply, the first switching power supply, the second switching power supply and the relay.
3. A transmission pneumatic element detection system as recited in claim 1, wherein: the air pressure sensor is a current type air pressure sensor, the output end of the current type air pressure sensor is connected with a resistor in series, the other end of the resistor is grounded, and the data input end of the data acquisition card is connected with the two ends of the resistor in parallel.
4. A transmission pneumatic element detection system as recited in claim 3, wherein: the resistance is a precision resistance of 50 omega.
5. A transmission pneumatic element sensing system as claimed in claim 1 or 2 or 3 or 4 wherein: the model of the data acquisition card is NI6143, and the model of the multi-path solid-state relay is GTGM 04.
6. A pneumatic element detection system of a transmission is used for detecting double H gas valves, and is characterized in that: the system comprises an upper computer, an alternating current power supply, a first switching power supply, a second switching power supply, a plurality of air pressure sensors, a displacement sensor, a data acquisition card, a plurality of paths of solid-state relays, at least one relay and second electromagnetic valves, wherein the number of the second electromagnetic valves is the same as that of the relays;
the input ends of the first switching power supply and the second switching power supply are connected with an alternating current power supply;
one end of each second electromagnetic valve is connected with the N end of the alternating current power supply, and the other end of each second electromagnetic valve is connected with the L end of the alternating current power supply through the working circuit of the corresponding relay;
the first switch power supply supplies power to a plurality of air pressure sensors which are connected in parallel, and the output end of each air pressure sensor is connected with a plurality of data input ends corresponding to the data acquisition card;
the data acquisition card interacts with an upper computer through a PCI bus; the signal output end of the data acquisition card is connected with the corresponding control end of the multi-path solid-state relay;
the displacement sensor is connected with a corresponding data input end of the data acquisition card;
the working voltage of the multi-path solid-state relay is provided by a data acquisition card; the working ends of the multi-path solid-state relay form a control loop with the control circuit of the corresponding relay through the output end of the second switching power supply respectively;
the air pressure sensors are respectively arranged on an air path between a first air outlet (7) of the double H air valve (6) and the high-grade side of the second high-low grade air cylinder (9) and an air path between a second air outlet (8) of the double H air valve (6) and the low-grade side of the second high-low grade air cylinder (9); the displacement sensor is arranged on a piston rod (2) of a driving cylinder (10) for driving the double H-shaped air valve (6).
7. The transmission pneumatic element detection system of claim 6, wherein: the displacement sensor is a stay wire displacement sensor and is arranged at the end part of a piston rod (11) of a driving cylinder (10) for driving the double H-shaped air valve (6).
8. A transmission pneumatic element detection system as claimed in claim 6 or 7, wherein: and an air switch is arranged on an alternating current loop formed by the alternating current power supply, the first switching power supply, the second switching power supply and the relay.
9. The transmission pneumatic element detection system of claim 8, wherein: the air pressure sensor is a current type air pressure sensor, the output end of the current type air pressure sensor is connected with a resistor in series, the other end of the resistor is grounded, and the data input end of the data acquisition card is connected with the two ends of the resistor in parallel.
10. A transmission pneumatic element detection system as recited in claim 9, wherein: the model of the data acquisition card is NI6143, and the model of the multi-path solid-state relay is GTGM 04.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN114384891A (en) * | 2021-12-06 | 2022-04-22 | 西安法士特汽车传动有限公司 | Test system and method for AMT hybrid power drive mode gear shifting actuating mechanism |
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