CN216955154U - ABS detection circuit and detection instrument - Google Patents
ABS detection circuit and detection instrument Download PDFInfo
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- CN216955154U CN216955154U CN202122415832.8U CN202122415832U CN216955154U CN 216955154 U CN216955154 U CN 216955154U CN 202122415832 U CN202122415832 U CN 202122415832U CN 216955154 U CN216955154 U CN 216955154U
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Abstract
The utility model discloses an ABS detection circuit and a detection instrument, wherein the ABS detection circuit comprises a first voltage measurement unit, a first voltage measurement unit and a second voltage measurement unit, wherein the first voltage measurement unit is connected with a power supply unit of an ABS and is used for detecting whether the power supply unit normally supplies power to the ABS; the second voltage measuring unit and the first resistance measuring unit are both connected with the wheel speed sensor unit of the ABS and used for detecting whether the wheel speed sensor unit has faults or not; the second resistance measuring unit is connected with the electromagnetic valve unit of the ABS and used for measuring whether the electromagnetic valve unit has faults or not; the second voltage measuring unit, the first resistance measuring unit and the second resistance measuring unit are all connected with the power supply unit. The utility model can measure whether the ABS of the vehicle has a fault.
Description
Technical Field
The utility model relates to the technical field of automobile maintenance, in particular to an ABS detection circuit and an ABS detection instrument.
Background
An Antilock Brake System (ABS) is one of important components of a vehicle and is an important system for ensuring safe driving of the vehicle, and thus, is essential for the maintenance and repair of the ABS. When the ABS is maintained, the conventional method generally refers to a circuit diagram of the ABS, and uses related detection equipment to check whether the power supply, the solenoid valve, and the sensor of the ABS have faults one by one, but the above method is time-consuming, and the next item can be detected only after one item is detected.
SUMMERY OF THE UTILITY MODEL
The utility model provides an ABS detection circuit and an ABS detection instrument, which can quickly complete the detection of ABS and improve the efficiency of maintaining ABS.
In a first aspect, the utility model provides an ABS detection circuit, which includes a first voltage measurement unit connected to a power supply unit of an ABS and configured to detect whether the power supply unit normally supplies power to the ABS; the second voltage measuring unit and the first resistance measuring unit are both connected with the wheel speed sensor unit of the ABS and used for detecting whether the wheel speed sensor unit has faults or not; the second resistance measuring unit is connected with the electromagnetic valve unit of the ABS and used for measuring whether the electromagnetic valve unit has faults or not; the second voltage measuring unit, the first resistance measuring unit and the second resistance measuring unit are all connected with the power supply unit.
Further, the first voltage measuring unit comprises a first voltmeter, a second voltmeter, a third voltmeter and a fourth voltmeter;
one end of the first voltmeter is connected with an ON gear power line of the power supply unit through a first voltmeter relay and a first diode, the other end of the first voltmeter is connected with a first bonding wire, and the first bonding wire is used for being in contact with a frame of a vehicle; one end of the second voltmeter is connected with an instrument power line of the power supply unit through a second voltmeter relay and a second diode, and the other end of the second voltmeter is connected with the first bonding wire; a power supply relay is connected between the connecting lines of the first voltmeter and the first diode and between the connecting lines of the second voltmeter and the second diode; a relay for measuring a bonding wire is connected between the first voltmeter and the first bonding wire and between the second voltmeter and the first bonding wire; the third voltmeter and the fourth voltmeter are both connected with the gateway device of the power supply unit.
Further, the second voltage measuring unit comprises a fifth voltmeter, a sixth voltmeter, a seventh voltmeter and an eighth voltmeter; the fifth voltmeter is connected with a right front wheel speed sensor of the wheel speed sensor unit through a first relay; the sixth voltmeter is connected with a left front wheel speed sensor of the wheel speed sensor unit through a second relay; the seventh voltmeter is connected with a left rear wheel speed sensor of the wheel speed sensor unit through a third relay; and the eighth voltmeter is connected with a right rear wheel speed sensor of the wheel speed sensor unit through a fourth relay.
Further, the first resistance measurement unit includes a first resistance meter; the positive electrode of the first ohmmeter is connected with the right front wheel speed sensor through a fifth relay, and the negative electrode of the first ohmmeter is connected with the right front wheel speed sensor; and the positive electrode of the first ohmmeter is connected with the left front wheel speed sensor through a sixth relay. The negative pole of the left front wheel is connected with the left front wheel speed sensor; the positive electrode of the first resistance meter is connected with the left rear wheel speed sensor through a seventh relay, and the negative electrode of the first resistance meter is connected with the right rear wheel speed sensor; the positive pole of the first ohmmeter is connected with the right rear wheel speed sensor through an eighth relay, and the negative pole of the first ohmmeter is connected with the left rear wheel speed sensor.
Furthermore, the first relay to the eighth relay are all five-pin relays and are all internally provided with a first control switch.
Further, the second resistance measuring unit comprises a second resistance meter, and a first control unit, a second control unit, a third control unit and a fourth control unit which are connected with the positive pole of the second resistance meter; the first control unit is respectively connected with an air inlet coil and an air outlet coil of a right front wheel electromagnetic valve of the electromagnetic valve unit; the second control unit is respectively connected with an air inlet coil and an air outlet coil of a left front wheel electromagnetic valve of the electromagnetic valve unit; the third control unit is respectively connected with an air inlet coil and an air outlet coil of a right rear wheel electromagnetic valve of the electromagnetic valve unit; the fourth control unit is respectively connected with an air inlet coil and an air outlet coil of a left rear wheel electromagnetic valve of the electromagnetic valve unit; the positive electrode and the negative electrode of the second ohmmeter are respectively connected with four ninth relays, the positive electrode of each ninth relay is connected with the air inlet coil, and the negative electrode of each ninth relay is connected with the air outlet coil; the negative electrode of the second ohmmeter is connected with the four air inlet coils and the four exhaust coils respectively, the second ohmmeter is connected to a second bonding wire through a tenth relay, and the second bonding wire is used for being connected with the frame.
Further, the first control unit, the second control unit, the third control unit, and the fourth control unit each include an eleventh relay and a twelfth relay; one ends of the eleventh relay and the twelfth relay are connected with the positive electrode of the second ohmmeter, the other end of the eleventh relay is connected with the air inlet coil, and the other end of the twelfth relay is connected with the air outlet coil.
Furthermore, the ninth relay to the twelfth relay are all six-pin relays and are all internally provided with a second voltmeter relay.
In a second aspect, the present invention provides an ABS detection apparatus, which includes an apparatus body and an ABS detection circuit as described in any one of the above items disposed in the apparatus body.
Further, be equipped with voltage measurement unit control area and resistance measurement unit control area on the instrument body, voltage measurement unit control area with resistance measurement unit control area all includes a plurality of button switches and a plurality of dial plate mounting hole.
According to the ABS detection circuit and the ABS detection instrument provided by the utility model, the voltage value of the power supply unit of the ABS can be measured through the first voltage measurement unit to judge whether the power supply unit normally supplies power, the voltage value of the wheel speed sensor unit of the ABS is measured through the second voltage measurement unit, the resistance value of the wheel speed sensor is measured through the first resistance measurement unit to judge whether the wheel speed sensor has faults, and the resistance value of the electromagnetic valve unit is measured through the second resistance measurement unit to judge whether the electromagnetic valve unit has faults, so that the ABS is maintained, and the ABS maintenance efficiency is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an ABS detection circuit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial circuit structure of an ABS detection circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a partial circuit structure of an ABS detection circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a partial circuit structure of an ABS detection circuit according to an embodiment of the present invention;
fig. 5 is a schematic partial structure diagram of an ABS detection apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1 and fig. 1, which are schematic structural diagrams of an ABS detection circuit 100 provided by the present invention, the present invention can detect whether an ABS200 has a fault.
As shown in the figure, the ABS detection circuit 100 includes a first voltage measurement unit 110, connected to a power supply unit of the ABS200, for detecting whether the power supply unit normally supplies power to the ABS 200; a second voltage measuring unit 120 and a first resistance measuring unit 130, both the second voltage measuring unit 120 and the first resistance measuring unit 130 being connected to the wheel speed sensor unit 220 of the ABS for detecting whether there is a malfunction of the wheel speed sensor unit 220; a second resistance measuring unit 140 connected to the solenoid valve unit 230 of the ABS, for measuring whether there is a failure in the solenoid valve unit 230; the second voltage measuring unit 120, the first resistance measuring unit 130, and the second resistance measuring unit 140 are all connected to the power supply unit.
Specifically, when the ABS is generally maintained, it is necessary to detect whether four parts of the ABS have faults, one of which is a power supply part of the ABS200, that is, a power supply unit, where the power supply unit generally includes an ON-gear 24V power line, an instrument 24V power line, and two gateway 5V power lines. When the first voltage measuring units 110 can measure the voltage of the power line and the voltage value is in the normal range, it indicates that the power supply unit can normally supply power to the ABS 200. The other is a wheel speed sensor portion of the ABS200, that is, a wheel speed sensor unit 220, where the wheel speed sensor unit 220 includes a left front wheel speed sensor 222, a right front wheel speed sensor 221, a left rear wheel speed sensor 224 and a right rear wheel speed sensor 223, when measuring, the vehicle needs to be in a moving state and voltage values of the wheel speed sensors of the above four wheels need to be measured respectively, and when the wheel speed sensor of a wheel can be measured and the voltage value is in a normal range, it indicates that the corresponding wheel speed sensor is normally installed and can be in a normal state when the vehicle moves. And thirdly, measuring the resistance value of the wheel speed sensor, wherein the resistance values of the wheel speed sensors of the four wheels are required to be measured respectively so as to judge whether the circuits of the wheel speed sensor and the wheel speed sensor are normal, and when the resistance value of the wheel speed sensor can be measured and the resistance value is in a normal range, the corresponding circuits of the wheel speed sensor and the wheel speed sensor are in a normal state. The fourth is that the solenoid valve portion of the ABS200, that is, the solenoid valve unit 230, also needs to measure whether the resistance values of the solenoid valves of the four wheels are normal, respectively, and specifically, whether the resistance values of the intake coil and the exhaust coil of the solenoid valves are normal.
The first voltage measuring unit 110 may measure each power line of the power supply unit respectively to determine whether the power supply unit normally supplies power, the second voltage measuring unit 120 is connected to four wheel speed sensors respectively, may measure a voltage value of each wheel speed sensor respectively to determine whether the wheel speed sensor is normally installed and can normally operate, the first resistance measuring unit 130 is connected to the four wheel speed sensors respectively, may measure a resistance value of each wheel speed sensor respectively to determine whether the wheel speed sensor and its line are normal, the second resistance measuring unit 140 measures resistance values of an intake coil and an exhaust coil of each solenoid valve respectively, and determines whether the intake coil and the exhaust coil are normal to determine whether the solenoid valve is normal.
Referring to fig. 2, in an embodiment, the first voltage measuring unit 110 includes a first voltmeter 111, a second voltmeter 112, a third voltmeter 113, and a fourth voltmeter 114;
one end of the first voltmeter 111 is connected with an ON-gear power line of the power supply unit through a first voltmeter relay 115 and a first diode, and the other end of the first voltmeter is connected with a first bonding wire 119, wherein the first bonding wire 119 is used for contacting with a frame of a vehicle; one end of the second voltmeter 112 is connected with an instrument power line of the power supply unit through a second voltmeter relay 116 and a second diode, and the other end thereof is connected with the first bond wire 119; a power supply detection relay 117 is connected between the connection line of the first voltmeter 111 and the first diode and between the connection line of the second voltmeter 112 and the second diode; a grounding wire measuring relay 118 is connected between the first voltmeter 111 and the first grounding wire 119 and between the second voltmeter 112 and the first grounding wire 119; the third voltmeter 113 and the fourth voltmeter 114 are both connected to the gateway device of the power supply unit.
When the 24VON gear power supply of the vehicle is started, the first voltmeter relay 115 is used for controlling the first voltmeter, the second voltmeter relay 116 is used for controlling the second voltmeter, and the first voltmeter relay 115 and the second voltmeter relay 116 are both internally provided with a switch, when the switches of the first voltmeter relay 115 and the second voltmeter relay 116 are turned on, if numerical values are displayed on the first voltmeter 111 to the fourth voltmeter 114, whether the power supply unit supplies power normally is judged according to the numerical values. If the values of the first voltmeter 111 and the second voltmeter 112 are about 24V and the values of the third voltmeter 113 and the fourth voltmeter 114 are about 2.5V, the surface power supply unit supplies power normally. When one voltmeter does not display numerical values in the first voltmeter 111 and the second voltmeter 112, the power supply relay 117 can be opened, so that a loop is formed between a connecting line of the first voltmeter 111 and the first diode and a connecting line of the second voltmeter 112 and the second diode, whether the ON-gear power line has a fault or the instrument power line has a fault is further judged, if the first voltmeter 111 and the second voltage do not change at the moment, the first bonding wire 119 can be connected with the vehicle frame, and whether the bonding wire of the power supply unit is poor in power supply or broken is judged. When neither the first voltmeter 111 nor the second voltmeter 112 shows a numerical value, the relay 118 for measuring the bonding wire may be opened, so that the connection line between the first voltmeter 111 and the first bonding wire 119 and the connection line between the second voltmeter 112 and the first bonding wire 119 form a loop, and if numerical values are shown on the first voltmeter 111 and the second voltmeter 112, it is indicated that the bonding wire of the power supply unit has a problem.
Referring to fig. 3, in an embodiment, the second voltage measuring unit 120 includes a fifth voltmeter 121, a sixth voltmeter 122, a seventh voltmeter 123, and an eighth voltmeter 124; the fifth voltmeter 121 is connected to a right front wheel speed sensor 221 of the wheel speed sensor unit 220 through a first relay 125; the sixth voltmeter 122 is connected with the left front wheel speed sensor 222 of the wheel speed sensor unit 220 through the second relay 126; the seventh voltmeter 123 is connected to the left rear wheel speed sensor 224 of the wheel speed sensor unit 220 through a third relay 127; the eighth voltmeter 124 is connected to the right rear wheel speed sensor 223 of the wheel speed sensor unit 220 through a fourth relay 128.
In a further embodiment, the first resistance measurement unit 130 comprises a first resistance meter 131; a positive electrode of the first resistance meter 131 is connected to the right front wheel speed sensor 221 via a fifth relay 132, and a negative electrode thereof is connected to the right front wheel speed sensor 221; the positive electrode of the first resistance meter 131 is connected to the left front wheel speed sensor 222 via a sixth relay 133, and the negative electrode thereof is connected to the left front wheel speed sensor 222; the positive electrode of the first resistance meter 131 is connected to the right rear wheel speed sensor 223 via a seventh relay 134, and the negative electrode thereof is connected to the right rear wheel speed sensor 223; the positive electrode of the first resistance meter 131 is connected to the left rear wheel speed sensor 224 via an eighth relay 135, and the negative electrode thereof is connected to the left rear wheel speed sensor 224.
In a further embodiment, the first relay 125 to the eighth relay 135 are all five-pin relays and all have a first control switch built therein.
The first to eighth relays 125 to 135 include, but are not limited to, five-pin relays, and are provided with switches, and the on and off of the relays can be controlled by the switches to control the fifth to eighth voltage meters 121 to 124 and the first resistance meter 131.
Thereby first control switch is used for controlling switching on and closing of the relay that corresponds to control and corresponds the fast sensor of voltmeter measurement, and an outside button all can be connected to every first control switch, and the staff of being convenient for controls switching on and closing of relay through the outside button. When the voltage of the wheel speed sensor is measured, all the first control switches of the first to fourth relays 125 to 128 may be turned on, and if values are displayed on the fifth to eighth voltmeters 121 to 124, whether the corresponding wheel speed sensor has a fault is determined according to the values. Taking the right front wheel speed sensor 221 as an example for illustration, one side of the fifth voltmeter 121 is connected to a power supply unit for supplying power to the fifth voltmeter 121, the other side of the fifth voltmeter 121 is connected to two ends of the right front wheel speed sensor 221, and a first relay 125 is arranged on one line, during measurement, the vehicle is kept in a moving state, when the vehicle is in the moving state, the induced gear of the vehicle cuts the magnetic field to generate an alternating voltage, the alternating voltage is transmitted to the first voltmeter 111 through the right front wheel speed sensor 221, and the generated alternating voltage is changed along with the change of the vehicle speed, generally, the vehicle speed is 10Km-60Km/h, the normal voltage value of the front wheel speed sensor is 1-2 ACV, if the voltage value detected by the first voltmeter 111 is within the normal range, it indicates that the right front wheel speed sensor 221 is normal, if the voltage value detected by the first voltmeter 111 is lower than 1ACV or the voltage value is not displayed, it indicates that the gap between the right front wheel speed sensor 221 and the sensing gear is too large, and the detection principle of the wheel speed sensors of other wheels is consistent with that of the right front wheel speed sensor 221, and therefore, the description is not repeated. In addition, if the voltage values detected by the first voltmeter 111 to the fourth voltmeter 114 are within a normal range, but the voltage values of the voltmeter are sometimes given or fluctuate greatly, it is indicated that the line of the wheel speed sensor corresponding to the voltmeter is in poor contact or the sensing gear is loose.
In measuring the resistance of the wheel speed sensor, it is necessary to measure the resistance value of the wheel speed sensor of each wheel one by one. Taking the right front wheel speed sensor 221 as an example, when the vehicle is in a stationary state, the switch of the fifth relay 132 is turned on, and if the first ohmmeter 131 displays a value, the resistance value of the right front wheel speed sensor 221 can be detected, in general, the normal range of the resistance value of the front wheel is 1800 to 2000 Ω, if the value displayed by the first ohmmeter 131 is within the normal range, the right front wheel speed sensor 221 is in a normal state, and if not, the right front wheel speed sensor 221 is in a poor contact state. If the first resistance meter 131 shows a value of 0 Ω, it indicates that the right front wheel speed sensor 221 is short-circuited, and if the value shows EEEE Ω, it indicates that the right front wheel speed sensor 221 is open-circuited. After the resistance of the right front wheel speed sensor 221 is measured, the first voltmeter relay 115 of the first relay 125 is turned off, the second voltmeter relay 116 of the second relay 126 is turned on, the left front wheel speed sensor 222 is measured, and the above steps are repeated until all the wheel speed sensors are measured.
Referring to fig. 4, in an embodiment, the second resistance measuring unit 140 includes a second resistance meter 141, and a first control unit, a second control unit, a third control unit, and a fourth control unit connected to a positive electrode of the second resistance meter 141; the first control unit is respectively connected with an air inlet coil and an air outlet coil of a left front wheel solenoid valve 232 of the solenoid valve unit 230; the second control unit is connected to an intake coil and an exhaust coil of the left front wheel solenoid valve of the solenoid valve unit 230, respectively; the third control unit is connected with an intake coil and an exhaust coil of a right rear wheel solenoid valve 233 of the solenoid valve unit 230, respectively; the fourth control unit is connected to an intake coil and an exhaust coil of the left rear wheel solenoid valve 234 of the solenoid valve unit 230, respectively; the positive electrode and the negative electrode of the second ohmmeter 141 are respectively connected to four ninth relays 142, the positive electrode of each ninth relay 142 is connected to the positive electrode of the intake coil, and the negative electrode thereof is connected to the exhaust coil; the negative electrode of the second ohmmeter 141 is further connected to the four intake coils and the four exhaust coils, respectively, the second ohmmeter 141 is further connected to a second bonding wire 144 through a tenth relay 143, and the second bonding wire 144 is used for being connected to the vehicle frame.
In a further embodiment, the first, second, third and fourth control units each comprise an eleventh relay 145 and a twelfth relay 146; one ends of the eleventh relay 145 and the twelfth relay 146 are connected to the positive electrode of the second resistance meter 141, the other end of the eleventh relay 145 is connected to the intake coil, and the other end of the twelfth relay 146 is connected to the exhaust coil.
In a further embodiment, the ninth relay 142 to the twelfth relay 146 are all six-pin relays and all have a second control switch built therein.
The ninth relay 142 to the twelfth relay 146 include but are not limited to a six-pin relay, and a second control switch is disposed in each of the ninth relay and the twelfth relay, and the second control switch is used for controlling the corresponding relay to be turned on and off, and can be connected with an external button, so that a worker can control the relay to be turned on and off through the button. The solenoid valve unit 230 includes solenoid valves of four wheels, each solenoid valve includes an air inlet coil and an air outlet coil, and the air inlet coil and the air outlet coil are connected through a bonding coil. When detecting whether the solenoid valve has a fault, it is necessary to measure whether the solenoid valve of each wheel has a fault one by one, and the left front wheel solenoid valve 232 is taken as an example for explanation.
In measuring the left front wheel solenoid valve 232, it is necessary to measure the intake coil resistance, the exhaust coil resistance, and the total resistance of the intake coil and the exhaust coil, respectively. Firstly, a switch of a tenth relay 143 is turned on, so that the second ohmmeter 141 is connected with the second bond wire 144 to prepare for measuring the electromagnetic valve, then, the second voltmeter relay 116 of the eleventh relay 145 in the first control unit is turned on, the second ohmmeter 141 measures the air intake coil of the left front wheel electromagnetic valve 232, if the second ohmmeter 141 displays a numerical value and the numerical value is within a normal range, it is indicated that the air intake coil is normal, generally, the normal range of the resistances of the air intake coil and the exhaust coil is 13-17 Ω, if the second ohmmeter 141 displays 0 Ω, it can be preliminarily determined that the air intake coil is short-circuited or the air intake coil line is short-circuited, and if the second ohmmeter 141 displays EEEE Ω, it can be preliminarily determined that the air intake coil is open-circuited or the air intake coil line is open-circuited. After the measurement of the air inlet coil is completed, the second voltmeter relay 116 of the eleventh relay 145 is closed, the second voltmeter relay 116 of the twelfth relay 146 is opened, the fault of the air outlet coil is measured, the detection principle of the air outlet coil is consistent with that of the air inlet coil, and no description is provided, after the resistance of the air outlet coil is measured, the twelfth relay 146 is closed, the ninth relay 142 and the second voltmeter relay 116 of the air inlet coil and the air outlet coil are opened, the total resistance value of the air inlet coil and the air outlet coil is measured, generally, the total resistance value of the air inlet coil and the air outlet coil is about 30 Ω, after the total resistance value is measured, the conditions of the air inlet coil and the air outlet coil are comprehensively judged by combining the total resistance value and the previously measured resistance values of the air inlet coil and the air outlet coil, wherein if the resistance value of the air inlet coil or the air outlet coil is EEEE Ω, and the total resistance value is 30 Ω, the solenoid valve bonding coil is indicated to have a problem, if the resistance values of the air inlet coil and the air outlet coil are in a normal range and the total resistance value is also in a normal range, the air inlet coil, the air outlet coil and the electromagnetic valve iron-bonding coil are in a normal state, so that the detection of the left front wheel electromagnetic valve 232 is completed, all the relays are reset, the left front wheel electromagnetic valve is ready to be measured, the measurement of the left front wheel electromagnetic valve is completed by repeating the steps until the measurement of the electromagnetic valves of all the wheels is completed.
The utility model also discloses an ABS detection instrument 300, wherein the ABS detection instrument 300 comprises an instrument body and the ABS detection circuit 100 of any one of the above embodiments disposed in the instrument body.
All lines of the ABS detection circuit 100 are concentrated in the wiring harness plug of the instrument body, and when the ABS detection circuit is used, the wiring harness plug of the instrument body is connected with the wiring harness plug of the ABS, so that all units in the ABS detection circuit 100 are connected with the ABS.
In an embodiment, a voltage measurement unit control area and a resistance measurement unit control area are arranged on the instrument body, and each of the voltage measurement unit control area and the resistance measurement unit control area includes a plurality of button switches 320 and a plurality of dial plate mounting holes 310.
Wherein, as shown in the figure, be equipped with a plurality of dial plate mounting holes 310 on the surface of instrument body, ABS detection circuitry 100's voltmeter, the display panel of ohmmeter can install in dial plate mounting hole 310, the staff of being convenient for observes, still is equipped with a plurality of button switch 320 simultaneously, and every button switch 320 all is connected with ABS detection circuitry 100 for different units open and close in control ABS detection circuitry 100 are in order to realize the measurement to ABS 200.
The utility model detects whether each power line of the power supply unit is normal through the first voltmeter to the fourth voltmeter so as to judge whether the ABS supplies power normally, measures the voltage values of the four wheel speed sensors through the fifth voltmeter to the eighth voltmeter so as to judge whether the wheel speed sensors can work normally, measures the resistance values of the four wheel speed sensors through the first ohmmeter so as to judge whether the wheel speed sensors are in a normal state, measures the resistance values of the four electromagnetic valves through the second ohmmeter so as to judge whether the electromagnetic valves are in a normal state, and is connected with the ABS through the wiring harness plug, so that the ABS can be maintained at one time, the operation is easy, and the maintenance efficiency is improved.
While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An ABS detection circuit, comprising:
the first voltage measuring unit is connected with a power supply unit of the ABS and used for detecting whether the power supply unit normally supplies power to the ABS;
the second voltage measuring unit and the first resistance measuring unit are both connected with the wheel speed sensor unit of the ABS and used for detecting whether the wheel speed sensor unit has faults or not;
the second resistance measuring unit is connected with the electromagnetic valve unit of the ABS and used for measuring whether the electromagnetic valve unit has faults or not;
the second voltage measuring unit, the first resistance measuring unit and the second resistance measuring unit are all connected with the power supply unit.
2. The ABS detection circuit of claim 1 wherein the first voltage measurement unit comprises a first voltmeter, a second voltmeter, a third voltmeter, and a fourth voltmeter;
one end of the first voltmeter is connected with an ON gear power line of the power supply unit through a first voltmeter relay and a first diode, the other end of the first voltmeter is connected with a first bonding wire, and the first bonding wire is used for being in contact with a frame of a vehicle;
one end of the second voltmeter is connected with an instrument power line of the power supply unit through a second voltmeter relay and a second diode, and the other end of the second voltmeter is connected with the first bonding wire;
a power supply relay is connected between the connecting lines of the first voltmeter and the first diode and between the connecting lines of the second voltmeter and the second diode;
a relay for measuring a bonding wire is connected between the first voltmeter and the first bonding wire and between the second voltmeter and the first bonding wire;
the third voltmeter and the fourth voltmeter are both connected with a gateway device of the power supply unit.
3. The ABS detection circuit of claim 1 wherein the second voltage measurement unit comprises a fifth voltmeter, a sixth voltmeter, a seventh voltmeter, and an eighth voltmeter;
the fifth voltmeter is connected with a right front wheel speed sensor of the wheel speed sensor unit through a first relay;
the sixth voltmeter is connected with a left front wheel speed sensor of the wheel speed sensor unit through a second relay;
the seventh voltmeter is connected with a left rear wheel speed sensor of the wheel speed sensor unit through a third relay;
and the eighth voltmeter is connected with the right rear wheel speed sensor of the wheel speed sensor unit through a fourth relay.
4. The ABS detection circuit according to claim 3, wherein the first resistance measurement unit includes a first resistance meter;
the positive electrode of the first ohmmeter is connected with the right front wheel speed sensor through a fifth relay, and the negative electrode of the first ohmmeter is connected with the right front wheel speed sensor;
the positive pole of the first resistance meter is connected with the left front wheel speed sensor through a sixth relay, and the negative pole of the first resistance meter is connected with the left front wheel speed sensor;
the positive electrode of the first resistance meter is connected with the right rear wheel speed sensor through a seventh relay, and the negative electrode of the first resistance meter is connected with the right rear wheel speed sensor;
the positive pole of the first ohmmeter is connected with the left rear wheel speed sensor through an eighth relay, and the negative pole of the first ohmmeter is connected with the left rear wheel speed sensor.
5. The ABS detection circuit according to claim 4, wherein the first relay to the eighth relay are all five-pin relays and have a first control switch built therein.
6. The ABS detection circuit according to claim 1, wherein the second resistance measurement unit includes a second resistance meter, and a first control unit, a second control unit, a third control unit, and a fourth control unit connected to a positive pole of the second resistance meter;
the first control unit is respectively connected with an air inlet coil and an air outlet coil of a right front wheel electromagnetic valve of the electromagnetic valve unit;
the second control unit is respectively connected with an air inlet coil and an air outlet coil of a left front wheel electromagnetic valve of the electromagnetic valve unit;
the third control unit is respectively connected with an air inlet coil and an air outlet coil of a right rear wheel electromagnetic valve of the electromagnetic valve unit;
the fourth control unit is respectively connected with an air inlet coil and an air outlet coil of a left rear wheel electromagnetic valve of the electromagnetic valve unit;
the positive electrode and the negative electrode of the second ohmmeter are respectively connected with four ninth relays, the positive electrode of each ninth relay is connected with the air inlet coil, and the negative electrode of each ninth relay is connected with the air outlet coil;
the negative electrode of the second ohmmeter is respectively connected with the four air inlet coils and the four air outlet coils, the second ohmmeter is connected to a second bonding wire through a tenth relay, and the second bonding wire is used for being connected with a frame of a vehicle.
7. The ABS detection circuit according to claim 6, wherein the first control unit, the second control unit, the third control unit, and the fourth control unit each include an eleventh relay and a twelfth relay;
one end of the eleventh relay and one end of the twelfth relay are connected to the positive electrode of the second resistance meter, the other end of the eleventh relay is connected to the intake coil, and the other end of the twelfth relay is connected to the exhaust coil.
8. The ABS detection circuit according to claim 7, wherein the ninth relay to the twelfth relay are all six-pin relays and have a second control switch built therein.
9. An ABS detection apparatus comprising an apparatus body and an ABS detection circuit according to any one of claims 1 to 8 provided in the apparatus body.
10. The ABS detection instrument of claim 9 wherein the instrument body defines a voltage measurement unit control area and a resistance measurement unit control area, the voltage measurement unit control area and the resistance measurement unit control area each including a plurality of push button switches and a plurality of dial mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122415832.8U CN216955154U (en) | 2021-10-08 | 2021-10-08 | ABS detection circuit and detection instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122415832.8U CN216955154U (en) | 2021-10-08 | 2021-10-08 | ABS detection circuit and detection instrument |
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| CN216955154U true CN216955154U (en) | 2022-07-12 |
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| CN202122415832.8U Active CN216955154U (en) | 2021-10-08 | 2021-10-08 | ABS detection circuit and detection instrument |
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| CN (1) | CN216955154U (en) |
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